Overview

W8×28 rims serve a narrower but more demanding segment than utility trailer sizes: they are dimensionally paired with agricultural tire sizes in the 9.5-28 class, commonly found on heavy implements, grain carts, and towed equipment where the wheel carries sustained vertical load and experiences lateral forces from uneven ground. The engineering priority is not versatility across bolt patterns — it is load margin at the specified PCD and bead-seat conformity to the W-profile tire interface. A rim in this size class that is underspecified on either dimension does not fail gradually; it fails under the conditions where the equipment cannot afford downtime.

Key Engineering Advantages

W-profile conformity for the 9.5-28 tire class. Industry product data for W8×28 rims identifies the matched tire sizes as 250/85-28 and 9.5-28, with the W-profile bead seat specified for that pairing. Using a J-profile or DW-profile rim on a tire that requires W is a dimensional mismatch that compromises bead seating and initiates irregular wear. This rim is manufactured to the W-profile contour for its designated tire range, eliminating the most common source of fitment returns in this size segment.

Load rating specified at the PCD level, not the rim size level. W8×28 rims are offered in multiple bolt-hole counts and hub bore dimensions depending on the equipment interface — product data shows configurations ranging from 6-bolt to 8-bolt patterns with varying center bores. The rated load capacity attaches to the specific PCD and disc configuration, not to “W8×28” as a generic size. For heavy implement duty, confirm the per-wheel rating against the loaded equipment weight, not the empty weight.

Steel grade and disc thickness matched to towed-implement fatigue. Towed agricultural equipment subjects the rim to cyclic vertical loading from ground irregularities and lateral loading during turns, concentrated at the disc-to-barrel weld. The steel specification on this rim is selected for that fatigue environment rather than for weight reduction. For a dealer supplying equipment manufacturers, documented steel grade and weld inspection records are the procurement evidence that supports warranty terms.

Customization options for OEM and fleet programs. W8×28 rims in this segment are commonly supplied with customizable finishes (standard colors including silver, white, yellow, and green) and OEM support for volume programs. For distributors building private-label trailer or implement wheel lines, finish and branding customization is a differentiation lever that does not alter the structural specification.

Fitment Notes

W-profile only. This rim is dimensionally matched to 9.5-28 and 250/85-28 tires. Do not substitute a DW or J-profile rim without verifying the tire manufacturer’s bead seat requirement.
Confirm PCD, center bore, and offset as a set. W8×28 hub interfaces vary by equipment make and model. An offset mismatch in heavy implement duty produces accelerated bearing loading and potential frame interference under load.

Best Suited For
Heavy agricultural implements, grain carts, and towed equipment running 9.5-28 or 250/85-28 tires where load margin and bead-seat conformity are the primary specification criteria.

Specifications
Size: W8×28 / Profile: W / Matched tire sizes: 9.5-28, 250/85-28 / Bolt pattern: Multi-configuration, confirm PCD at order / Center bore: Confirm per hub interface / Finish: Powder coat, standard colors available, OEM customization on request